Mark Hachiro Sawamura, OD
NPI 1497858898ActiveIndividual· Optometrist· Fullerton, CA
Optometrist (OD) in Fullerton, California, trained at Southern California College of Optometry (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $11,468 for 84 claims, against $2,611 paid for services in 2024. Tarsus Pharmaceuticals, Inc. was the largest of 2 companies reporting payments in 2024, $74.66 in all, mostly food and beverage.
Overview
| NPI | 1497858898 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | OD |
| Sole proprietor | No |
| NPI issued | Sep 7, 2006 |
| Last updated in NPPES | Feb 17, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 9835TPL | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Optometry (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 17 |
|---|---|
| Services billed | 45 across 10 procedure codes |
| Paid by Medicare | $2,611 |
Part D prescriptions in 2024
| Prescriptions (claims) | 84 · 109 30-day fills |
|---|---|
| Patients | 19 |
| Total drug cost | $11,468 |
| Generic share | 48% of claims |
Education and affiliations
| Medical school | Southern California College of Optometry |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Optometry |
Medical group
- Marshall B Ketchum UniversityAnaheim, CA · 57 clinicians
Industry payments (Open Payments)
- 2024$74.66 · 3 payments from 2 companies
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Tarsus Pharmaceuticals, Inc. | $51.57 | 2 |
| Alcon Vision LLC | $23.09 | 1 |
What the 2024 payments were for
- Food and Beverage$74.66 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 94 optometrists in Fullerton · All optometrists in California